package day02;
//double类型演示
public class DoubleDemo {
    public static void main(String[] args) {
        //double: 双精度浮点型, 8个字节
        double a = 3.14; //3.14位小数直接量, 默认为double
        float b = 3.14f;//3.14f为float型直接量
        
        double c=3.0,d=2.9;
        System.out.println(c-d); // 0.10000000000000009, 发生舍入误差
        double e=6.0,f=4.9;
        System.out.println(e-f);// 1.0999999999999996, 发生舍入误差
        double g=6.0,h=1.9;
        System.out.println(g-h);// 4.1 没有发生舍入误差
    }
}
